In Tanzania, and in East Africa in general, bioassessment methods for monitoring and assessing riverine ecosystems are not yet in place. This thesis describes the development of a macroinvertebrate-based bioassessment method for assessing the degree of anthropogenic disturbance in Tanzanian rivers. The hypotheses that, ‘macroinvertebrate assemblages reflect disturbance in river systems’; ‘rivers with similar abiotic features have similar macroinvertebrate assemblages’; and ‘spatio-t...
ABSTRACT e-learning, as defined to be the use of information and communications technology (ICT) for supporting the educational processes, has motivated Tanzania to apply ICT in its education system. Tanzania secondary schools in rural areas are geographically and socially isolated. Rural Tanzania secondary schools face a number of problems including ways in getting learning materials, as well as inadequacy in qualified teachers. The impact of these problems is poor performance in National E...
This study introduces the mechanical elements that are the main components in the dynamic modeling of mechanical systems. It discusses the electrical elements of voltage and current source, resistor, capacitor, inductor, and operational amplifier. We derive mathematical models for electrical systems. The transfer function, enables connecting the input to the output of a dynamic system into the Laplace domain for single-input, single output, multiple-input and multiple output systems. It ...
The olefin metathesis was discovered incidentally and independently in 1950s by different researchers on their attempt to polymerize olefins by the Ziegler process [1-5]. The earliest discoveries were the basic exchange olefin metathesis of the inter-conversion of propylene, ethylene and butane-2 as well as ROMP of norbornene and cylcopentene. However, the connection between the two types of reactions was not immediately apparent mainly because different catalysts and conditions were generall...
There is a big industrial growth in Sudan with economical development, so there is a big need for transportation trucks and Vehicles. The batteries are very important part of these vehicles and it's under control of ISO since Sudan is a member of COMESA. SARIA factory had been chosen as field of application of this study, because it is the pioneer and the singlet one in Sudan. Based on the above economical and technical considerations, the goal of thesis is evaluation of the technologi...
The power consumption of physical and virtual machines is a major challenge for small to large scale cloud computing data centers. Tow states of the virtual machine, active state if selected by cloudlet and idle state ifnot selected. Two typed of works applied which are existing work and proposed work. In existing work non-power aware data center, the power consumption used time-shared data center that discarded cloudlet file size to selected VMs. To performance enhanced of power consu...
ABSTRACT Orf virus (ORFV) is a member of the parapoxvirus genus that causes orf, a zoonotic and epitheliotropic highly contagious disease mainly affecting sheep, goats, wild ruminants and humans. In the present study, an outbreak of a disease in goats with clinical signs suggestive of orf in 11 flocks with a total of 259 goats was investigated between May and June 2015. Eight villages in districts of Bagamoyo (2), Ilala (1), Kinondoni (1) and Kisarawe (4) in Coast and Dar es Salaam regions o...
ABSTRACT Since the discovered of Campylobacter in 1913, is known to cause diseases in human. Investigations were done in broiler poultry by culture method, biochemical molecular technique followed by antimicrobial susceptibility of thermophilic Campylobacter sp in Morogoro Municipal, Tanzania. The objectives of the study were to establish prevalence of thermophilic Campylobacter by molecular and biochemical approach followed by antimicrobial susceptibility at each stage of broiler production...
The aim of the study is to find the best location for an emergency hospital in the West Nile, which is easy to reach and reduces the time of arrival due to its economic, social and vital importance. The use of GIS techniques' as information systems Geography plays an important role by providing an environment for planning, organization and decision-making. In this research addressed the identification of current and new hospital locations to ensure the accessibility and accessibility o...
ABSTRACT A study was conducted to assess the quality of Tanzanian honey based on antioxidant properties and antimicrobial activities on bacteria and fungi in relation to its physicochemical properties. Two types of honey samples (stinging and stingless bees’ honey) were collected from central zone (Singida and Dodoma) and western zone (Tabora and Shinyanga). Honey samples were analysed for anti-microbial activities, anti-oxidant properties (total phenols, vitamin C) and physico-chemical pr...
This study was conducted from September 2017 to March 2018 in Elfasher locality –North Darfur State, to identify Babesia species and tick infected cattle and to measure some hematological and biochemical parameters associated with bovine babesiosis. A total of 227 whole blood were collected from Elfasher locality [Elfasher veterinary hospital, Elfasher slaughter house, and cattle farms in Elfasher ]. For identification of Babesia using thin smear Giemsa stain. Packed cell volume was ...
ABSTRACT This was an experiment to determine the presence and level of expression of OsCIPK15 salt responsive gene in Tanzanian rice breeders’ lines. Abiotic stress is one of the factors affecting rice cultivation in Tanzania. The calcineurin B- like protein interacting protein kinases (OsCIPKs) responsive genes have been observed to express in abiotic stress. The calcineurin B- like protein interacting protein kinases-15 (OsCIPK15) salt responsive gene, which is usually a silent gene expr...
ABSTRACT The purpose of this study was to determine the effect of drying methods and beheading of dried sardines on nutritional, microbial and sensory qualities. Fresh sardines from Lake Victoria were dried by three different solar drying methods (solar dryer, rack and ground). Dried sardine from each drying methods were divided in two portions (whole body and beheaded part). Analytical samples were analysed using AOAC and ISO standard methods for nutritional and microbial qualities. Both sa...
This study aimed to measure concentration of selenium (Se) in five Sudanese fruits: Ziziphus spina christi (Nabaque); Adansonia digitata (Tabaldi);Balanites egyptiacea (Laloub); Grewia tenax (Gudeim) and Tamarindus indica (Aradeb). Se concentration was also measured in soil where the plant grows from different depths (75 cm ,100 cm and 150 cm). Also water sample was taken from nearby (Hafeer) to determine Se concentration. All samples were collected according to Standard Method of Sampli...
ABSTRACT The factors influencing aflatoxin contamination in maize at harvest and during storage in three villages of Manungu, Mlanga and Kongwa in Kongwa district, Dodoma region, Tanzania, were investigated in the year 2015/2016. The villages were chosen as they were major maize producers and suppliers to the international Kibaigwa grain market located in this area. The number of maize samples analyzed were 91. Twenty three samples were taken during harvest and stored for 90 and 180 days in ...